diff --git a/src/utils/palindrome.js b/src/utils/palindrome.js
new file mode 100644
index 0000000..3403315
--- /dev/null
+++ b/src/utils/palindrome.js
@@ -0,0 +1,17 @@
+/**
+ * Author: Niki Nielsen
+ * Date: 06/03/2026
+ * File: palindrome.js
+ * Description: isPalindrome function.
+ */
+
+"use strict";
+
+function isPalindrome(str) {
+  if (typeof str !== "string") return false;
+
+  const cleaned = str.toLowerCase().replace(/[^a-z0-9]/g, "");
+  return cleaned === cleaned.split("").reverse().join("");
+}
+
+module.exports = isPalindrome;
diff --git a/test/utils/palindrome.spec.js b/test/utils/palindrome.spec.js
new file mode 100644
index 0000000..954ea22
--- /dev/null
+++ b/test/utils/palindrome.spec.js
@@ -0,0 +1,23 @@
+/**
+ * Author: Niki Nielsen
+ * Date: 06/03/2026
+ * File: palindrome.spec.js
+ * Description: Tests for the isPalindrome function.
+ */
+"use strict";
+
+const isPalindrome = require("../../src/utils/palindrome");
+
+describe("palindrome.js", () => {
+  it("should return true for a simple palindrome", () => {
+    expect(isPalindrome("racecar")).toBe(true);
+  });
+
+  it("should return false for a non-palindrome", () => {
+    expect(isPalindrome("hello")).toBe(false);
+  });
+
+  it("should handle punctuation and mixed case", () => {
+    expect(isPalindrome("A man, a plan, a canal: Panama")).toBe(true);
+  });
+});